Mimics-based computer simulation double-wedge-shaped osteotomy method

Abstract

The invention discloses a Mimics-based computer simulation double-wedge-shaped osteotomy method. The method comprises the following steps: acquiring CT projection data of the affected side and CT projection data of the uninjured side of a patient; respectively inputting the affected side CT projection data and the uninjured side CT projection data into Mimics, and establishing a corresponding affected side three-dimensional model and uninjured side three-dimensional model only containing humerus and ulna and radius; performing X-ray photography on the affected side three-dimensional model and the uninjured side three-dimensional model in an X-ray module, and acquiring a corresponding affected side simulated normal-position X-ray film and an uninjured side simulated normal-position X-ray film; determining an affected side osteotomy orthopedic angle according to the affected side simulation normal position X-ray film and the uninjured side simulation normal position X-ray film; designing an osteotomy path on the affected side simulation orthotopic X-ray film; projecting an osteotomy path on the affected side simulation normal position X-ray film to an entity STL according to a position likelihood principle to obtain an osteotomy indication point; and enabling a computer to simulate osteotomy and surgical reduction. The method can improve the measurement precision of the lifting angle, effectively reduce the lateral displacement, increase the bone surface contact area, improve the bone contact stability, and reduce the bone disconnection rate.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a computer-simulated double-wedge osteotomy method based on Mimics. Background technique [0002] Mimics is an interactive medical image control system of Materialise Company. It is a highly integrated and easy-to-use 3D image generation and editing software. It can input various scanning data such as CT and MRI, and create 3D models for editing. Transformation processing of scale data. [0003] Osteotomy is a kind of orthopedic surgery in orthopedics. It is mostly used for congenital abnormal bone development, congenital or birth trauma caused by dislocation and malunion of bones and joints, and bone dislocation or deformity affecting function after traumatic fracture. During the operation, according to the design, a certain shape is cut at the fixed bone, and then reconnected to change the abnormal line of force, correct the deformity, and improve some functions of the limbs....

AI Technical Summary

Problems solved by technology

[0004] Humeral wedge osteotomy is a small branch of osteotomy. In prior art humeral wedge osteotomy, the carrying angle is measured with a protractor on the X-ray of the elbow joint, which is affected by body position and measurement errors, and the accuracy is not good. high

In addition, in the classic French osteotomy, there are problems such as large lateral displacement, small bone surface contact area, and low stability of bone connection.

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